中国农业科学 ›› 2005, Vol. 38 ›› Issue (12): 2380-2386 .

• 作物遗传育种·种质资源 • 上一篇    下一篇

分子标记辅助选育兼抗白粉病、条锈病、黄矮病小麦新种质

曾祥艳,张增艳,杜丽璞,辛志勇,陈孝   

  1. 中国农科院作物所
  • 收稿日期:2005-05-30 修回日期:1900-01-01 出版日期:2005-12-10 发布日期:2005-12-10
  • 通讯作者: 张增艳

Development of Wheat Germplasms with Multi-Resistance to Powdery Mildew, Stripe Rust and Yellow Dwarf Virus by Molecular Marker-Assisted Selection

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  1. 中国农科院作物所
  • Received:2005-05-30 Revised:1900-01-01 Online:2005-12-10 Published:2005-12-10

摘要: 选育和推广多抗、兼抗型小麦品种是今后小麦育种发展方向之一。本研究通过复合杂交、回交,将抗白粉病基因聚合体Pm4 +Pm13 +PmV、抗条锈病基因YrX(源自YW243)、抗黄矮病基因Bdv2向优异农艺亲本转育。利用抗病性鉴定和分子标记辅助选择,选育出聚合了3~5个抗病基因的兼抗白粉、条锈和黄矮病的冬性小麦新种质和春性小麦新种质,其中聚合Pm4 +Pm13 +PmV +YrX +Bdv2等5个抗病基因的冬性材料1株,聚合Pm4 +Pm13 +YrX +Bdv2d 的冬性、春性(BC2F3)材料分别为2株、3株,聚合Pm4 +PmV +YrX +Bdv2等4个抗病基因的冬性、春性(BC2F3)材料分别为6株和18株,聚合Pm13 +YrX +Bdv2、PmV +YrX +Bdv2等3个抗病基因的春性材料分别为7株和46株。本研究可为小麦多抗、兼抗育种提供遗传组成明确的丰富抗源和快捷的选择方法。

关键词: 小麦, 白粉病, 条锈病, 黄矮病, 基因聚合, 分子标记

Abstract: The genes conferring respectively resistance to wheat powdery mildew, wheat stripe rust and yellow dwarf disease were transferred to some elite wheat varieties with good agronomic characters by recurrent crossing and phenotype selection. Some winter and spring wheat individuals possessing multi-resistance genes were selected by phenotype and molecular marker-assisted selection,including 1 individual pyramiding 5 resistance genes of Pm4+Pm13+PmV +YrX+Bdv2, 5 individuals pyramiding 4 genes of Pm4+Pm13+YrX+Bdv2, 24 individuals pyramiding 4 genes of Pm4+PmV +YrX+Bdv2, 7 and 46 individuals pyramiding 3 genes of Pm13+YrX+Bdv2 and PmV+YrX+Bdv2, respectively. The study can provide valuable resistance parents, and effective detecting methods for wheat breeding against powdery mildew, stripe rust and yellow dwarf disease.

Key words: wheat, powdery mildew, stripe rustr, barley yellow dwarf virus, gene pyramiding, Molecular marker